246results about How to "Simple ingredients" patented technology

The invention relates to a copper plating electroplating solution as well as a preparation method and application thereof. The copper plating electroplating solution comprises the following components: copper pyrophosphate, a complexing agent, ammonia water, a bath building agent, a gloss agent, a pH regulator and water, the complexing agent is selected from potassium pyrophosphate or sodium pyrophosphate; the mass percentage concentration of the ammonia water is 20%-30%, and the volume concentration of the ammonia water in the copper plating electroplating solution is 2-10 mL / L; the mass concentration of the gloss agent in the copper plating electroplating solution is 10 to 50 mg / L; and the pH value of the copper plating electroplating solution is 7.8-10. When the copper plating solution is used for silver grid line copper plating, on the premise that the cost is reduced, the silver grid line copper plating has a good plating effect, the silver grid line is firm and does not fall off, and good conductive performance is kept.

The invention discloses a surface passivating inert metal, a plating solution thereof and a passivating method, and belongs to the technical field of inert metal surface treatment. The plating solution comprises sulfydryl silane, amino silane, acid, deionized water and absolute ethyl alcohol. And the inert metal subjected to surface pretreatment is put into a plating solution to be subjected to electrolytic treatment and dipping treatment correspondingly, and then the inert metal with the silane composite passive film on the surface is obtained through stepped curing treatment. The plating solution is simple in component, stable in system and low in price; the preparation method of the plating solution is simple and easy to operate; the passivating treatment method is short in technological process and high in preparation efficiency; the prepared silane composite passivation film is uniform and compact in structure, colorless and transparent, can keep good gloss of the inert metal surface, and has excellent properties such as oxidation resistance, corrosion resistance and insulation.

The invention discloses a composition with homology of medicine and food and application thereof in relieving physical fatigue, the composition is selected from at least two of ginseng, maca and green tea, and the obtained composition can synergistically regulate oxidation resistance, calcium ion metabolism and energy metabolism, synergistically improve the ATP content and glycogen level of an organism, accelerate removal of lactic acid and urea nitrogen and improve the physical fatigue. And the synergistic effect of the ginseng, the maca and the green tea is better than that of single use of the ginseng, the maca and the green tea. The composition provided by the invention is verified by a standard method of a health-care food function test and evaluation method (2023 edition), and is proved to have a remarkable effect of relieving physical fatigue.

The invention discloses a method for leaching precious metal through catalytic oxidation of thiosulfate, which comprises the following steps: mixing a copper-containing catalytic system-thiosulfate solution with a precious metal-containing material, and carrying out leaching reaction to obtain a precious metal leachate; wherein a copper-containing catalytic system in the copper-containing catalytic system-thiosulfate solution is a copper-iminodiacetic acid complex. The precious metal is extracted by adopting a copper-iminodiacetic acid catalytic system, the leaching rate of the precious metal and the consumption of thiosulfate can be considered, the leaching effect is remarkably superior to that of an existing copper ammonia system, and industrial application is easy to achieve.

The invention belongs to the field of synthesis of organic matters, and particularly relates to a synthesis method of 4-oxo-beta-ionone, which comprises the following steps: S1, dissolving beta-ionone in a good solvent, and introducing sulfur dioxide; s2, adding water and a catalyst into the solvent, and then adding an oxidizing agent; s3, removing a water phase, and adding an alkaline solution; s4, separating a water phase, recovering the solvent, and distilling to obtain 4-oxo-beta-ionone; according to the method, the beta-ionone is oxidized into the 4-oxo-beta-ionone by using the oxidizing agent, and the sulfur dioxide is introduced to protect conjugated double bonds on a six-membered ring in the beta-ionone before the oxidizing agent is added, so that the oxidation selectivity of the oxidizing agent is improved, and the oxidation efficiency is high.

The invention provides a fluopicolide preparation method and a fluopicolide preparation device, and relates to the technical field of pesticide bactericide production. A first feeding pipe and a second feeding pipe are mounted at the left end of the first reaction tank, and the right end of the first reaction tank is connected with a second reaction tank through a first discharging pipe; raw materials participating in the reaction are cheap and easy to obtain, the product quality and yield stability are high, the reaction conditions are mild, and the device and the preparation method are suitable for large-scale production in workshops; when the device discharges, powder adhered to the inner wall of the drying tank is automatically scraped and cleaned, so that the device has better cleaning and using effects and better maintenance efficiency; the problems that multiple chemical substances need to be introduced to participate in the reaction, the reaction process is complex, later impurity removal and purification are not facilitated, the production cost is relatively high, the reaction speed is slow, the reaction effect is poor, and the device and the preparation method are not suitable for large-scale production in workshops are solved.

The invention discloses a preparation method of a monatomic alloy photocatalyst, which comprises the following steps: preparing a carbon material carrier CN through grinding and roasting, dispersing the carbon material carrier CN in a solution containing a Cu element, and removing the solution through rotary evaporation to obtain a Cu-loaded carrier Cu (at) CN; and dispersing the carrier in a gold precursor solution, mixing, carrying out rotary evaporation to remove a solvent to obtain a solid, and washing and drying the solid to obtain the Cu nano-particle loaded carrier. According to the invention, metal Au atoms are doped onto Cu nanoparticles on the surface of a carrier by a method of combining wet mixing and atom replacement reduction, and the Cu nanoparticles with small size, uniform particle size and uniform distribution are presented on the surface of the catalyst. An Au-Cu monatomic metal active center on the surface of the photocatalyst is constructed to adjust Au surface charges and increase the * CO adsorption capacity, so that local high-concentration * CO on the surface of the catalyst in the reaction process is realized, a carbon-carbon coupled reaction energy barrier is reduced, and high-selectivity reaction for preparing ethanol by reducing CO2 can be realized.

The invention relates to a Prussella sp. And application thereof, and belongs to the technical field of microorganisms. The method comprises the following steps: firstly, screening and separating a strain of Plesteria sp. RL-1 from intestinal tracts of worker termites of saw termites, and preserving the Plesteria sp. RL-1 in China General Microbiological Culture Collection Center (CGMCC) with the preservation number of CGMCC No.32481; the Prussella reevesii RL-1 can grow on an inorganic salt culture medium with alkali lignin as a unique carbon source, and has the capacity of degrading alkali lignin and decolorizing dye; experiments prove that the Princisteria RL-1 can rapidly and efficiently degrade alkali lignin, the degradation rate reaches up to 88% or above, the Princisteria RL-1 can adapt to wide temperature and pH ranges and can directly degrade crop straw such as rice straw, obtained metabolites can promote plant growth, and the Princisteria RL-1 can be applied to resource application of agricultural waste and has a wide application prospect. And wastewater treatment in industries such as papermaking and printing and dyeing.

The invention provides a 25-hydroxyvitamin D dissociation liquid, a detection kit and application. The 25-hydroxyvitamin D dissociation liquid comprises 10-100mM of a buffer solution with the pH value of 7.2-7.4, 0.1%-5% of long-chain alkane carboxylic acid and 0.1%-1% of an organic solvent. The 25-hydroxyvitamin D detection kit is prepared by developing a new 25-hydroxyvitamin D dissociation agent capable of replacing perfluorooctanoic acid and combining a double-antibody sandwich method, and has the characteristics of high accuracy, high sensitivity, good stability, simplicity and convenience in operation, high detection efficiency, low cost, safety, environmental friendliness and the like; and the method has relatively high economic value and social benefit.

The invention provides a simulation material for a mechanical test of a press-fitting explosive, which is prepared from the following raw materials in parts by weight: 65.5% of ammonium sulfate, 27%-33% of aluminum powder, 1.5%-4% of microcrystalline wax, 1%-2% of butadiene rubber and 0.2%-0.8% of graphite. The compressive strength and the tensile strength of a grain formed by pressing the simulation material for the mechanical test of the pressed explosive are basically consistent with those of a grain formed by pressing a polyblack aluminin-2 (JHL-2) explosive, the change trend and the change limit of the strength in the mechanical test process can be truly reflected, and effective reference data are provided for mechanical property evaluation; relatively real and reasonable model parameters are provided for the digital design of the mechanical property of the press-fitting explosive; in an aging test, a tensile test, a mechanical compression test and a dynamic Brazilian test, the simulation material for the press-fitting explosive mechanical test can be prevented from being in contact with energetic explosive components, so that the safety of the test is improved, and the potential safety hazard is reduced.

The invention discloses a thermal shock resistant and corrosion resistant honeycomb ceramic and a preparation method thereof. The honeycomb ceramic comprises basic powder and a composite additive, the composite additive comprises samarium oxide and zirconium oxide, wherein the addition amount of the samarium oxide is 1-9 wt% of that of the basic powder, and the addition amount of the zirconium oxide is 1-9 wt% of that of the basic powder. The acid and alkali corrosion resistance of the honeycomb ceramic is improved by adding samarium oxide, meanwhile, the thermal shock resistance of the ceramic is improved by adding zirconium oxide, deformation generated in the sintering process of the ceramic is buffered, and therefore the thermal shock resistant and corrosion resistant honeycomb ceramic is obtained, and the corrosion resistance of the ceramic is synchronously improved through the synergistic interaction effect.

The invention discloses an Mg + Nb co-doped TiO2 giant dielectric ceramic material and a preparation method thereof, and relates to the technical field of giant dielectric materials. The (Mg + Nb) co-doped TiO2 ceramic is successfully prepared by adopting a traditional solid phase method, the performance of the TiO2-based giant dielectric ceramic is regulated and controlled through a new doping strategy, the raw material is single, the preparation process is simple, the cost is low, the repeatability is good, the yield is high, the obtained ceramic material has giant dielectric performance, and the preparation method is suitable for industrial production. The (Mg + Nb) co-doped TiO2 novel giant dielectric ceramic can meet the requirements of a dielectric material with high dielectric constant, low dielectric loss and good temperature and frequency stability, and compared with other widely applied giant dielectric materials, the titanium dioxide-based giant dielectric ceramic has the characteristics of simplicity in preparation and excellent dielectric property.

The invention belongs to the technical field of bioengineering, and particularly discloses an in-vitro amplification method of canine NK cells capable of efficiently killing tumor cells and application of the canine NK cells. 3 mL of dog peripheral blood is taken, and dog peripheral blood mononuclear cells PBMC are obtained through separation; activating, amplifying and culturing canine NK cells capable of efficiently killing tumor cells; and collecting the amplified canine NK cells capable of efficiently killing the tumor cells, and storing the canine NK cells in a cryopreservation solution according to the cell density of 1 * 10 < 8 > cells / mL. According to the method, the canine NK cell with high amplification multiple can be obtained by only needing 3mL of canine peripheral blood, and the amplification multiple is high; the number of the dog NK cells of the healthy volunteer dog sample is 3.02 * 108, the amplification multiple is 1008, the total number of the dog NK cells of the tumor volunteer affected dog sample reaches 6.84 * 107, and the amplification multiple is 340; and the canine NK cell obtained by the invention has the effect of efficiently killing tumor cells.

The invention belongs to the technical field of medicines, and discloses an astaxanthin and fish oil compound for assisting in reducing blood sugar as well as a preparation method and application of the astaxanthin and fish oil compound. The astaxanthin and fish oil compound for assisting in reducing blood sugar comprises the following raw materials: astaxanthin oil and fish oil. The invention also discloses an application of the astaxanthin and fish oil compound for assisting in reducing blood sugar in preparing a medicine for reducing blood sugar. The astaxanthin and fish oil compound prepared by the invention is simple in component, high in antioxidant activity and remarkable in blood sugar reducing effect, and has a wide application prospect in the aspect of treating diabetes mellitus.

The invention provides a high-temperature-resistant and salt-fog-resistant wave-absorbing coating which is prepared from the following components in parts by weight: 26.9-32 parts of organic silicon resin, 54.8-57.7 parts of metal micro powder, 0.5-0.8 part of a dispersing agent, 0.5-0.8 part of an anti-settling agent, 1-1.5 parts of a salt-fog-resistant auxiliary agent and 10.6-13.2 parts of a solvent, the components are compounded and cured to obtain the high-temperature-resistant and salt-fog-resistant wave-absorbing coating, and particularly, the high-temperature-resistant and salt-fog-resistant wave-absorbing coating is prepared from the following components in parts by weight: 26.9-32 parts of organic silicon resin, 54.8-57.7 parts of metal micro powder, 0.5-0.8 part of The preparation method comprises the following steps: adding organic silicon resin, a solvent, a dispersing agent and a salt-spray-resistant additive into a reaction kettle, carrying out first dispersion stirring, adding an anti-settling agent, carrying out second dispersion stirring, adding metal micro-powder in batches, carrying out third dispersion stirring to obtain a wave-absorbing coating, spraying the wave-absorbing coating on a metal substrate, airing at room temperature, and drying at room temperature to obtain the wave-absorbing coating. And respectively baking at 55 DEG C, 100 DEG C and 250 DEG C to obtain the high-temperature-resistant salt-fog-resistant wave-absorbing coating. The wave-absorbing coating prepared by the preparation method disclosed by the invention can be free from blistering and cracking at 320 DEG C for 300 hours, and also can be free from obvious corrosion, wrinkling, cracking and falling off in a neutral salt mist environment for 480 hours.

The invention discloses a method for in-situ growth of a ZIF-7 film layer on the surface of a magnesium alloy micro-arc oxidation film layer, and the method specifically comprises the following steps: step 1, treating the surface of a magnesium alloy workpiece to be processed to make the surface smooth; 2, the workpiece treated in the step 1 serves as an anode to be placed in electrolyte, graphite serves as a cathode, a direct-current power source is adopted for conducting micro-arc oxidation treatment on the workpiece in a constant-current mode, a micro-arc oxidation film layer is formed on the surface of the workpiece, and then cleaning and blow-drying are conducted; step 3, putting the workpiece prepared in the step 2 into a ZIF-7 seed crystal solution, keeping the temperature at 110-130 DEG C for 180-300 minutes for in-situ growth, and taking out, cleaning and drying the workpiece after the growth is finished; wherein the ZIF-7 seed crystal liquid is prepared from zinc nitrate hexahydrate and benzimidazole, and the solvent is prepared from N, N-dimethylformamide and methanol; in the ZIF-7 seed crystal liquid, the concentration of zinc nitrate hexahydrate is 0.5 to 2.5 g / L, and the concentration of benzimidazole is 0.5 to 2.5 g / L.

The invention provides ATP / CCS / SA-PEI aerogel as well as a preparation method and application thereof, attapulgite ATP, carboxylated chitosan CCS, polyethyleneimine PEI and sodium alginate SA are adopted as raw materials, and polymer modification and crosslinking are promoted through an ionic crosslinking method to form the aerogel. The preparation method comprises the following steps: firstly, adding a prepared CCS solution into an SA solution to obtain a CCS / SA solution; the preparation method comprises the following steps: adding a CCS solution into a reaction kettle, adding an ATP suspension, finally adding a PEI solution, uniformly mixing, pouring into a plastic mold, freeze-drying, cross-linking, washing with water, and freeze-drying again to obtain the ATP / CCS / SA-PEI aerogel. The aerogel prepared in the invention has the advantages of large specific surface area, many adsorption groups, good adsorption performance on dye pollutants and heavy metal ions, good thermal stability, reusability, and good application value in the removal of dye pollutants and heavy metal ions in sewage.

The invention provides a loop-mediated isothermal amplification primer composition for combined detection of multiple equine animal viruses, a disposable centrifugal micro-fluidic chip, an LAMP micro-fluidic chip kit and a nucleic acid detection method of the LAMP micro-fluidic chip kit. The loop-mediated isothermal amplification primer composition comprises nucleotide sequences as shown in SEQ ID: 1 to SEQ ID: 16. A fluorescent dye and a loop-mediated isothermal amplification primer composition are pre-embedded in the disposable centrifugal micro-fluidic chip. The LAMP micro-fluidic chip kit comprises a disposable centrifugal micro-fluidic chip and an LAMP amplification working solution. The problem of multiple detection of VSV, NiV, EEEV and WEEV in equine animal viruses is solved, and the detection method is high in specificity, short in reaction time, safe, simple and convenient to operate, high in sensitivity, low in cost and suitable for being used when a temporary virus detection laboratory is established.

The invention discloses an AIE fluorescence immunochromatography test strip for detecting a toxoplasma gondii antibody as well as a preparation method and application of the AIE fluorescence immunochromatography test strip, and belongs to the technical field of production of veterinary biological diagnosis products. The test strip provided by the invention comprises a bottom plate, a sample pad, a combination pad, a nitrocellulose membrane and a water absorption pad, wherein the sample pad, the combination pad, the nitrocellulose membrane and the water absorption pad are bonded on the bottom plate in an end-to-end connection manner; the combination pad is coated with AIE microsphere labeled protein; the nitrocellulose membrane contains a detection line T and a quality control line C; the test strip prepared by adopting a double-antigen sandwich antibody detection method can be used for detecting serum antibodies in animal bodies such as pigs, cats and the like. Compared with a colloidal gold test strip on the market, the colloidal gold test strip has the advantages that the sensitivity is improved by 32 times, the batch-to-batch difference is less than 5%, the test performed by adopting 40 parts of pig serum and 30 parts of cat serum shows that the specificity, the stability and the accuracy are excellent, the operation is simple, the cost is low, and an accurate result can be obtained only in 10 minutes; and a rapid and effective detection method is provided for epidemiological investigation and disease diagnosis.

The invention discloses soluble powder for preventing and treating chicken necrotic enteritis, and belongs to the technical field of veterinary medicine preparations. The soluble powder preparation comprises the following components: 30-80% of penicillin V potassium, 1-20% of a beta-lactam inhibitor, 0.5-6% of a pH regulator, 0-10% of an anti-caking agent, 0.02-0.5% of a metal ion chelating agent and the balance of a filler, totaling 100%. The soluble powder is used for drinking water of poultry, and the content of penicillin V potassium in an aqueous solution of the soluble powder is still kept at 99% or above after 12 hours and is still kept at 95% or above after 24 hours. The water solution of the soluble powder does not block a water drinking line in clinical use, so that the clinical use effect and convenience are greatly improved.

The invention relates to the technical field of culture media, in particular to a serum-free complete culture medium for human umbilical cord mesenchymal stem cells and a preparation method thereof.The serum-free complete culture medium takes DMEM / F12 as a basic culture medium and is matched with UltraGRO-Advanced, a penicillin-streptomycin double-antibody solution, a recombinant human epidermal growth factor and a basic fibroblast growth factor, and the serum-free complete culture medium for the human umbilical cord mesenchymal stem cells is obtained. The serum-free complete culture medium can replace a serum culture medium in a conventional culture system of mesenchymal stem cells, the characteristics of normal adherence, good growth state and stem cells of the cells are kept, the serum-free complete culture medium reduces the risks of heterologous contamination and immunological rejection to the maximum extent, the added components capable of promoting cell growth and the content can be determined and controlled, and the culture medium is suitable for large-scale popularization and application. The use is safer.

The invention discloses a composite adjuvant, and belongs to the field of vaccine adjuvants. The main active components of the composite adjuvant are squalene, polysorbate 80 and monophosphoryl ester A, the composite adjuvant is in an oil-in-water emulsion form, nano-scale emulsion droplet particles are uniformly distributed in a water phase, and the system is stable. The invention also discloses a preparation method of the composite adjuvant based on a stirring method. The composite adjuvant comprehensively utilizes the dual characteristics of the oil-in-water emulsion and the immunopotentiator, and can induce a higher level of immunoreaction when being combined with the antigen, so that the composite adjuvant can be used for preparing vaccines and improving the effectiveness of the vaccines.

The invention belongs to the field of polyester materials, and relates to a high-temperature-resistant polyarylester fluorescent film and a preparation method thereof. The preparation method comprises the following steps: carrying out esterification reaction on a reaction monomer under the conditions of a catalyst and a stabilizer, firstly mixing and stirring bisphenol fluorene, 18-crown ether-6 and deionized water to prepare a precursor solution, then gradually dropwise adding part of a paraphthaloyl chloride solution, continuously reacting for 3 hours under an alkaline condition, then adding an aqueous solution of bisphenol A into the solution, continuously reacting for 3 hours under an alkaline condition, and carrying out vacuum drying, so as to obtain the bisphenol fluorene / 18-crown ether-6 composite material. And continuously dropwise adding the residual paraphthaloyl chloride solution, reacting for 5 hours, adjusting the pH value of the mixed solution to be acidic, finally crushing, suction-filtering, precipitating and drying the product, and dissolving the product in an N-methyl pyrrolidone solution to prepare the film. The film prepared by the method has better high-temperature resistance, can emit blue fluorescence under the excitation of ultraviolet light, and can be used as a new optical material to be applied to the anti-counterfeiting field.

The invention discloses a high-entropy alloy fiber material of a core-shell structure and a preparation method and application thereof, and belongs to the technical field of alloy material preparation.The method comprises the steps that a buffering agent is dissolved in deionized water to obtain a solution A, the solution A is heated, a complexing agent, additional salt, a reducing agent and soluble metal salt are sequentially added, stirring and dissolving are conducted, and a solution B is obtained; adjusting the pH value of the solution B, and standing at room temperature to obtain an electrolyte; performing ultrasonic cleaning, flushing and drying on the conductive fibers with acetone, ethanol and deionized water respectively; a saturated calomel electrode is used as a reference electrode, a conductive fiber is used as a working electrode, a carbon electrode bar is used as a counter electrode, the three electrodes are immersed in an electrolyte, a constant-potential electro-deposition method is used, electro-deposition is carried out on the surface of the conductive fiber, and the high-entropy alloy fiber is obtained. Uniform electro-deposition of the high-entropy alloy on the surface of the fiber is achieved, and the high-entropy alloy fiber material with excellent conductivity is obtained.

The invention relates to an elution phase, an oil gel bead preparation and a preparation method of the oil gel bead preparation, the surface of the oil gel bead preparation does not wrap a wall material, and the oil gel bead preparation is prepared from 50-80 parts by weight of isononyl isononanoate, 10-20 parts by weight of trimethylsiloxyphenyl polydimethylsiloxane, 0-20 parts by weight of stearyl alcohol and / or 0-15 parts by weight of behenyl alcohol, 1-10 parts by weight of dextrin palmitate and 0-10 parts by weight of rosa palmifolia fruit oil according to 100 parts by weight. The obtained oil gel bead preparation is good in forming effect and more uniform in surface and size distribution, so that the oil gel bead preparation is more attractive, the oil gel bead preparation is melted once being smeared, and the phenomenon of mud rubbing is avoided. Besides, the oil gel bead preparation can be used for embedding fat-soluble active matters, the components are simpler, and the particle size of the oil gel bead preparation can be controlled, so that the oil gel bead preparations with different particle sizes can be obtained and can be applied to different types of cosmetics.

The invention provides a pramipexole oral soluble film composition as well as a preparation method and application thereof. The invention provides a pramipexole oral soluble film composition. The pramipexole oral soluble film composition comprises an active medicine, a film-forming material, a plasticizer and a flavoring agent, the active drug is a hydrochloride of S-2-amino-4, 5, 6, 7-tetrahydro-6-(propylamino)-benzothiazole as shown in a formula I and / or other pharmaceutically acceptable salt forms of the hydrochloride of S-2-amino-4, 5, 6, 7-tetrahydro-6-(propylamino)-benzothiazole as shown in the formula I. The pramipexole oral soluble film composition has the advantages that the pramipexole oral soluble film composition is thin in thickness, fast in disintegration, free of grit feeling after being dissolved in the oral cavity, capable of improving the taste of a medicine and improving the compliance of a patient, capable of being instantly dissolved in the oral cavity without drinking water, fast in oral absorption speed, uniform in film appearance, high in tensile capacity, good in flexibility and long in service life. Meanwhile, the raw materials are easy to obtain, the process is simple, the operation is simple and convenient, the drug loading capacity is high, the drug content uniformity is good, and the preparation method is suitable for industrial production. # imgabs0 #

The invention discloses siRNA (small interfering Ribonucleic Acid) nanoparticles capable of efficiently targeting mononuclear phagocytes and mediated by intercellular effect of neutrophils as well as a preparation method and application of the siRNA nanoparticles. The siRNA nanoparticles comprise mesoporous silica nanoparticles carrying siRNA, and functional cell membranes over-expressing ICAM-1 ligands are wrapped outside the mesoporous silica nanoparticles carrying siRNA. Key sentinel cells (mononuclear phagocytes, MPs) for targeted mitochondrial DNA release to treat inflammatory responses caused by mtDNA. The efficient delivery of MPs is realized by using a functionalized cell membrane of an overexpressed ICAM-1 ligand to wrap nano-particles and by virtue of infiltration and rapid apoptosis of a large number of neutrophils in an inflammatory microenvironment and a process (cell burial effect) of specific phagocytosis of the neutrophils by the MPs. Compared with a traditional targeting scheme, the in-vitro targeting efficiency and the in-vivo targeting efficiency of the FCM-coated siNPs scheme are improved by 360% and 120% respectively. The siRNA is guided to target MPs, and the expression of STING is inhibited, so that the inflammatory reaction caused by mtDNA release is regulated and controlled, and an excellent anti-inflammatory curative effect is shown in an inflammatory model mouse.

The invention belongs to the technical field of oral health care, and particularly discloses a toothpaste composition for inhibiting dental plaque and improving gingival inflammation, finished toothpaste and a preparation method thereof. The toothpaste composition is prepared from 0.5 to 10 parts of zinc carbonate hydroxide, 0.01 to 0.2 part of pearl powder, 0.01 to 0.2 part of amber powder, 0.5 to 5 parts of lactobacillus / soybean milk fermentation product filtrate, 0.05 to 1 part of borneol and 0.01 to 0.2 part of clove oil. The toothpaste composition provided by the invention inherits a classic formula, is simple in components and high in safety, and has good effects of inhibiting dental plaque and improving gingival inflammation; and the provided preparation process is simple and easy for large-scale production.

A catalytic cracking aid for improving the octane number of gasoline and a preparation method thereof. The catalytic cracking aid is composed of MFI structure molecular sieve, clay, pseudo-boehmite, phosphorus compound, binder, modified metal compound, etc. The catalytic cracking aid for improving the octane number of gasoline is obtained by the following preparation method: the MFI structure molecular sieve is pre-treated with alkali; before the pseudo-boehmite is acidified, the molecular sieve is added; after the acidified colloid is homogenized, it is directly spray-dried, roasted, and washed with water to obtain the catalytic cracking aid for improving the octane number of gasoline. The catalytic cracking aid disclosed in the present invention has a simple preparation process, a high solid content of the colloid slurry, and can be used in the catalytic cracking process to effectively improve the octane number of gasoline, with a small increase in liquefied gas and an increased propylene yield.

The invention discloses a high-energy-storage-density anti-ferroelectric ceramic material and a preparation method thereof. The general chemical formula is (Pb < 0.98 > La < 0.02 >) (Zr < 0.7 > Sn < 0.3 >) < 0.995 > O < 3-x > wt% Al < 2 > O < 3 >, x is smaller than or equal to 0.7, Al2O3 is a sheet-shaped template, the Al2O3 sheet-shaped template is directionally arranged in the anti-ferroelectric ceramic material along the same direction through a tape casting preparation process, and the Al2O3 sheet-shaped template is regulated to be parallel to a test electrode through polishing and metal spraying on the upper surface and the lower surface parallel to the Al2O3 sheet-shaped template. According to the anti-ferroelectric ceramic material, the Al2O3 sheet-shaped template and the test electrode are arranged in parallel, so that the Al2O3 sheet-shaped template effectively disperses an applied electric field in the whole anti-ferroelectric ceramic material matrix, non-uniform distribution of a local electric field is reduced, improvement of the breakdown strength of the anti-ferroelectric ceramic material is facilitated, and the energy storage density of the anti-ferroelectric ceramic material is further improved.